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HomeMiningMetallurgy & Process DesignUnit Operations & MetallurgyFlotationLocked Cycle Test
A locked cycle test is a repetitive batch flotation test. Locked cycle tests are conducted for two main reasons:
Locked cycle testing is the preferred method for arriving at a metallurgical projection from laboratory testing because the final cycles of the test are designed to simulate a continuous, stable flotation circuit.
In the basic locked cycle test procedure, a complete batch test is performed in the first cycle, followed by similar batch tests that have “intermediate” material from the previous cycle added to the appropriate location in the current cycle. These batch tests, or cycles, are continued in this iterative manner. The final concentrate and final tailings from each cycle are filtered and thus removed from further processing. At the end of the test, all the final and intermediate products are dried, weighed and subjected to chemical analysis. The test is balanced and a metallurgical projection is made.
The locked cycle test is very well accepted in the metallurgical industry, however the proper execution and resulting projections require the high level of technical expertise that SGS routinely provides. To confirm the flowsheet and produce a metallurgical projection, it is crucial that steady state is reached. SGS experts have the technical expertise and experience to determine:
With over 70 years experience, SGS has done bench and pilot plant testing on thousands of flotation projects. Partner with us today for confidence in your locked cycle test results.
Locked cycle testing in the USA
The service in which you are interested is not currently available in the USA. The contact details for your nearest SGS office able to offer this service are shown on this page and local experts will supply you with further information.